Question

1.Range of the data 7,15,20,16,6,5,4,18,25,15 and 5 is​

Answer 1

Step-by-step explanation:

Parameters

Population mean = μ = ( Σ Xi ) / N

Population standard deviation = σ = sqrt [ Σ ( Xi - μ )2 / N ]

Population variance = σ2 = Σ ( Xi - μ )2 / N

Variance of population proportion = σP2 = PQ / n

Standardized score = Z = (X - μ) / σ

Population correlation coefficient = ρ = [ 1 / N ] * Σ { [ (Xi - μX) / σx ] * [ (Yi - μY) / σy ] }

Answer 2

Answer:

21

Step-by-step explanation:

25 - 4 = 21